*For example, use a visual fraction model to express 3 × (2/5) as 6 × (1/5), recognizing this product as 6/5.*

*For example, use a visual fraction model to express 3 × (2/5) as 6 × (1/5), recognizing this product as 6/5.*

Determine whether a given whole number in the range 1-100 is prime or composite.

Generate a number or shape pattern that follows a given rule.

Represent verbal statements of multiplicative comparisons as multiplication equations.

Multiply or divide to solve word problems involving multiplicative comparison, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem, distinguishing multiplicative comparison from additive comparison.

Assess the reasonableness of answers using mental computation and estimation strategies including rounding.

Find all factor pairs for a whole number in the range 1-100.

Explain why a fraction a/b is equivalent to a fraction (n × a)/(n × b) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size.

Use this principle to recognize and generate equivalent fractions.

Examples: 3/8 = 1/8 1/8 1/8 ; 3/8 = 1/8 2/8 ; 2 1/8 = 1 1 1/8 = 8/8 8/8 1/8.

Add and subtract mixed numbers with like denominators, e.g., by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction.

## Comments Problem Solving Worksheets For 4th Grade

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